JPH05106975A - Wastewater drainage device of condenser - Google Patents

Abstract

(57) [Summary] (Correction) [Purpose] To provide a waste liquid drainage device for a condenser with good operating efficiency. [Structure] A water supply valve 26, a ventilation valve 32, and a drain valve 34 are closed by a timer device 40, and an intake valve 30 is opened. Next, the vacuum pump 16 is operated to bring the condenser 12 and the drain tank 28 to a negative pressure, and the vapor 20 is sucked into the condenser 12 and liquefied. When the liquefied waste liquid is sufficiently accumulated in the condenser, the water supply valve 26 is opened by the timer device 40, and the waste liquid is transferred from the condenser 12 to the drain tank 28. When the transfer of waste liquid is completed, the timer device 40
Then, the water supply valve 26 and the intake valve 30 are closed, and the ventilation valve 32 and the drain valve 34 are opened to drain the waste liquid in the drain tank 28. When drainage of the waste liquid is completed, the intake valve 30 is opened by the timer device 40, the ventilation valve 32 and the drain valve 34 are closed, and the vacuum pump 16 makes the inside of the drain tank 28 negative pressure again.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a waste liquid drainage device for a condenser, and more particularly to a waste liquid drainage device for a condenser for liquefying and draining vapor containing candy components generated from a concentrator of a candy manufacturing device.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 3, a waste liquid drainage device for a condenser of this type operates a vacuum pump 1 to evacuate the inside of the condenser 2 to remove the candy from the condenser 3 of the candy manufacturing apparatus. The vapor 4 containing the components is continuously sucked into the condenser 2 by utilizing the pressure difference. Then, the sucked vapor 4 is sequentially cooled by the cooling pipe 4 wound around the condenser 2 and liquefied in the condenser 2. Then, when the liquefied waste liquid 5 is sufficiently accumulated in the condenser 2, the vacuum pump 1 is stopped and the drain valve 6 is opened so that the waste liquid 5 flows into the drain passage 8 through the drain pipe 7. ing.

When the drainage of the waste liquid 5 is completed, the drain valve 6 is closed, the vacuum pump 1 is operated, and the above steps are repeated.

[0004]

However, in the conventional waste liquid drainage device for the condenser, the drain valve 6 is opened when the waste liquid 5 is drained, so that the inside of the condenser 2 is changed from the vacuum state to the atmospheric pressure state. Therefore, in order to continuously suck the vapor 4 into the condenser 2, it is necessary to wait until the inside of the condenser 2 becomes a vacuum again by the operation of the vacuum pump 1, so that there is a drawback that the operation efficiency is poor.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a waste liquid drainage device for a condenser, which has higher operating efficiency than a conventional waste liquid drainage device for a condenser.

[0006]

In order to achieve the above-mentioned object, the present invention provides a condenser to which a cooling device is attached and a condenser which communicates with the condenser to operate so that the inside of the condenser has a negative pressure. An intake device for sucking steam into the condenser, a drainage tank connected to the condenser via a water supply valve, and a drainage tank connected to the intake device via an intake valve, and a drainage valve connected to the drainage tank, And a control device for controlling opening and closing of the water supply valve, the intake valve and the drain valve.

[0007]

According to the present invention, first, the control device closes the water supply valve and the drainage valve and opens the intake valve.
Next, the suction device is operated to make the condenser and the drain tank have a negative pressure, the vapor is sucked into the condenser, and the sucked vapor is cooled and liquefied by the cooling device. Next, when the liquefied waste liquid is sufficiently accumulated in the condenser, the water supply valve is opened by the control device, and the waste liquid is transferred from the condenser to the drain tank having the same pressure as the condenser.

Next, when the transfer of the waste liquid is completed, the controller closes the water supply valve and the intake valve and opens the drain valve to drain the waste liquid in the drain tank. Then, when the drainage of the waste liquid is completed, the control device opens the intake valve and closes the drain valve, and the suction device causes the inside of the drain tank to have a negative pressure again. As a result, since the water supply valve is closed when the waste liquid is drained, the atmospheric pressure inside the condenser is maintained. Therefore, since the steam can be sucked into the condenser at the same time as the waste liquid is drained, the operation can be efficiently performed.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of a waste liquid drainage device for a condenser according to the present invention will be described in detail below with reference to the accompanying drawings. Figure 1
1 shows an embodiment of a waste liquid drainage device 10 for a condenser according to the present invention. In the waste liquid drainage device 10 of the condenser, a vacuum pump 16 is communicated with the condenser 12 through a pipe 14, and the vacuum pump 16 is operated to make the inside of the condenser 12 a negative pressure. The steam 20 containing the candy component is sucked into the condenser 12 from the condenser 18 through the pipe 22. A cooling pipe 24 through which cooling water flows is wound around the surface of the condenser 12, and the condenser 12 is cooled by the cooling pipe 24 so that the steam 20 sucked into the condenser 12 is liquefied. Becomes waste liquid and is stored in the condenser 12.

A drainage tank 28 is connected to the condenser 12 via a water supply valve 26. This drain tank 28
Is connected to the vacuum pump 16 via an intake valve 30 which is attached with its upper part opened.
Is opened and the vacuum pump 16 is operated, so that the inside of the drainage tank 28 becomes negative pressure. Further, the drainage tank 28 is communicated with the atmosphere through a ventilation valve 32 which is attached by opening the upper part thereof, and the inside of the drainage tank 28 becomes atmospheric pressure by opening the ventilation valve 32.

Further, the drainage tank 28 has a drainage valve 34.
Is installed with its bottom open, and the drain valve 34
Is opened, the waste liquid in the drain tank 28 passes through the drain pipe 36 and is drained in the drain passage 38. Further, a timer device 40 that controls opening and closing of each valve is installed. The timer device 40 includes a cable 42 to the water supply valve 26 and a cable 44 to the intake valve 30.
To the vent valve 32 via a cable 46 and to the drain valve 34 via a cable 48. As a result, the opening / closing operation of each of the valves 26, 30, 32, 34 is timer-controlled by the timer device 40.

Next, the opening / closing control of the valve by the timer device 40 of the waste liquid drainage device 10 of the condenser configured as described above will be described with reference to FIG. [Operation Mode] First, the water supply valve 26, the ventilation valve 32, and the drain valve 34 are closed by the timer device 40, and the intake valve 30 is opened. Next, the vacuum pump 16 is operated to bring the condenser 12 and the drain tank 28 to a negative pressure, the steam 20 is sucked into the condenser 12, and the sucked steam 2
0 is cooled by the cooling pipe 24 and liquefied.

[Regarding Waste Liquid Transfer Mode] Condenser 1
When the waste liquid liquefied in 2 is sufficiently accumulated in the condenser 12, the water supply valve 26 is opened by the timer device 40, and the waste liquid is transferred from the condenser 12 to the drain tank 28. The transfer of waste liquid is performed by the condenser 12 and the drain tank 2
Since 8 and 8 are in the same pressure state, smooth operation can be performed.

[Drainage Mode] When the time when the transfer of the waste liquid is completed has elapsed, the water supply valve 26 and the intake valve 30 are closed by the timer device 40, and the drain valve 34 is opened to drain the waste liquid in the drain tank 28. The water is drained to the drainage channel 38 through the pipe 36. If the ventilation valve 32 is controlled to open during drainage, the drain tank 2
Because the inside of 8 changes to atmospheric pressure in a short time, drainage tank 2
The drainage from 8 can be performed in a short time.

[Drainage Completion Mode] When the time when the drainage of the waste liquid is completed, the timer device 40 causes the intake valve 30
Is opened, the ventilation valve 32 and the drain valve 34 are closed, and the inside of the drain tank 28 is made negative pressure again by the vacuum pump 16. Then, by repeating the steps from the step of cooling and liquefying the steam 20 in the [operation mode] with the cooling pipe 24 to the step of the [drainage completion mode], the condenser 1
The waste liquid liquefied in 2 can be smoothly drained.

As a result, in this embodiment, since the water supply valve 26 is closed when the waste liquid is drained, the condenser 12
The atmospheric pressure inside is maintained at a negative pressure. Therefore, since the steam 18 can be sucked into the condenser 12 at the same time as the drainage of the waste liquid, the waste liquid drainage of the conventional condenser in which the steam cannot be sucked until the inside pressure of the condenser becomes negative after the drainage is completed. It can be operated more efficiently than the device.

[0017]

As described above, according to the waste liquid drainage device for a condenser according to the present invention, the control device controls the opening and closing of the water feed valve, the drain valve and the intake valve to simultaneously discharge the waste liquid from the drain tank. Since the vapor is sucked into the condenser, it is possible to improve the operation efficiency as compared with the conventional waste liquid drainage device of the condenser.

[Brief description of drawings]

FIG. 1 is an explanatory view showing an embodiment of a waste liquid drainage device for a condenser according to the present invention.

FIG. 2 is an explanatory diagram of a valve opening / closing operation by a timer applied to a waste liquid drainage device for a condenser according to the present invention.

FIG. 3 is an explanatory diagram showing an embodiment of a conventional waste liquid drainage device for a condenser.

[Explanation of symbols]

 10 ... Condenser waste liquid drainage device 12 ... Condenser 16 ... Vacuum pump 26 ... Water supply valve 28 ... Drainage tank 30 ... Intake valve 32 ... Ventilation valve 34 ... Drainage valve 40 ... Timer device

Claims (1)

[Claims] 1. A condenser to which a cooling device is attached, an intake device which communicates with the condenser to operate so that the inside of the condenser has a negative pressure to suck vapor into the condenser, and a water supply valve to the condenser. A drainage tank connected to the intake device via an intake valve, a drainage valve connected to the drainage tank, and a control device for controlling opening / closing of the water supply valve, the intake valve, and the drainage valve. A wastewater drainage device for a condenser, comprising: